Gustavo Barreira Lins (Rio de Janeiro, June 3, 1986), better known as Gustavo Lins, is a samba and pagoda singer and also a Brazilian composer. (From Wikipedia)
When he released his first CD in 2003, he experienced the taste of being the "Prince of Brazil". The single "Pra Ser Feliz" (song composed by Gustavo Lins himself) was at the top of the charts for several months, appearing among the ten most played songs in Brazil for about a year.